Interesting Ultimaker Steel Frame Build

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Meduza
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Re: Interesting Ultimaker Steel Frame Build

Post by Meduza » May 31st, 2017, 11:59 am

And you do NOT need 200A to make something like this, 200A is enough for 6-10mm steel or 4-6mm aluminum.

I would probably use less than 100A to weld a steel frame like this (but I am not very experienced, so take this advice for what it is.)

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jonnybischof
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Re: Interesting Ultimaker Steel Frame Build

Post by jonnybischof » June 1st, 2017, 2:58 am

Thanks for the info guys!

My projects are currently on hold (until at least August :( ) because I have a large community project where I'll be designing and building a lot of stuff (like furniture, a stage, and some room automation). But I just realized I might actually need to weld some stuff for this project. So, we'll see how it goes. Maybe I get one of them sooner than I thought..
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Jonny

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Re: Interesting Ultimaker Steel Frame Build

Post by jonnybischof » June 27th, 2017, 2:30 am

Turns out I need a welder for some mounting brackets I make for my community project. So I searched a bit and found a site that looks like they know something about welding (I would never buy anything off ebay or the likes) and dug around in their selection.

I settled with this one:
http://www.expondo.co.uk/stamos-power-2 ... -tact-2125
(They have a Swiss webshop with free shipping, just switched it to english for the forum).

Looks quite nice, and has more than enough power (max setting should throw out my circuit breakers). It also has some of the nice features like configurable pulsing and so on. Also got the foot pedal which I think will be useful.

I know, the machine is quite cheap (for what it's advertised to be), but I will be welding like once every two to six months in the longer run. I don't need a 3000 EUR welder for that...
One nice thing about this one is that they use standardized parts, and they offer any spare parts and will service the machine if necessary at any time. Should get it some time next week. Will report back on how I like it, but this might take some time because I have very little welding experience. I did some projects in school with an acetylene welder, but that's already a bunch of years past :D

/edit:
By the way. I bought a welding mask and gloves with the machine. Do I need a jacket / apron as well? In the videos it doesn't seem to spark a lot, at least not when welding stainless steel.

/edit:
Ok, done some youtube education:
So, it's about UV protection. Guess I'll look for some protective gear then..
Funny thing is, my tool shop has a leather welder's jacket, that says it protects "from 200 Amps upwards", implying that you wouldn't need this jacket below 200 Amps.
Best regards,
Jonny

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drayson
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Re: Interesting Ultimaker Steel Frame Build

Post by drayson » June 27th, 2017, 3:17 am

whoo... nice... honestly, I´m already checking my pocket money.... :-)
Jacket is a good idea as depending on the position and the material and if there are sparks. Remembering my time in the technical education, I had one semester to lear how to weld. long time ago... was really funny as depending on the precicion/ability, the wels held well or broke quite fast :-)
So start learning.... and organize a few scrap parts to try...

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Re: Interesting Ultimaker Steel Frame Build

Post by jonnybischof » June 27th, 2017, 3:28 am

Good thing about buying lasercut steel parts: The more you buy, the cheaper they get. Will get lots of pieces to learn on :P

The cool thing about this welder is, I might be able to weld aluminum sheets with it (I know the machine can, but we shall see if I can :D). This opens some doors for my 3D printer builds... And most importantly, I don't need any bent steel sheets anymore because these are really expensive.
Best regards,
Jonny

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Re: Interesting Ultimaker Steel Frame Build

Post by reibuehl » June 27th, 2017, 4:19 am

Based on my (limited) welding experience, I found aluminium easier to weld than steel with a TIG welder.

I hope you got an automatic welding mask and not one of those simple shields or masks that usually come with the kits? If not, get one! You will have so much more fun welding with a mask that switches between dark and clear automatically.
Reiner.

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Re: Interesting Ultimaker Steel Frame Build

Post by LePaul » June 27th, 2017, 9:19 am

Definitely invest in good shield, gloves and cover yourself up. Especially if you do a lot of welding....you'll get quite the sunburn otherwise

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jonnybischof
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Re: Interesting Ultimaker Steel Frame Build

Post by jonnybischof » June 27th, 2017, 11:59 am

Yeah, got an automatic mask. Hope it's any good, but I think it should be fine.

Thinking about getting a welding jacket, but it's kinda expensive... But probably worth it anyways.
Best regards,
Jonny

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Re: Interesting Ultimaker Steel Frame Build

Post by reibuehl » June 27th, 2017, 12:09 pm

Any old leather jacked should do - old motorbike jackets are good as they have the necessary buttons to close up tight all the way up.
Reiner.

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Meduza
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Re: Interesting Ultimaker Steel Frame Build

Post by Meduza » June 27th, 2017, 4:44 pm

We use welding overalls at Stockholm Makerspace made out of flameproof heavy duty denim-like cotton, they cost about 60€ or so and provides protection for most of the body.

You want good UV protection or you may end up with a really nasty sunburn that hurts like hell...

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Re: Interesting Ultimaker Steel Frame Build

Post by jonnybischof » June 28th, 2017, 3:38 am

So.... Now that I can weld aluminum, why not weld those Misumi alu extrusions together instead of using screws and connectors?

If I make some large steel brackets that fix the extrusions in place, but leave the space around the welding joints open, then I should be able to perfectly align them with the brackets, fix the brackets, weld the extrusions, remove the brackets and have them positioned perfectly.
Right or wrong? Worth a shot?

It would be too much work for a commercial 3D printer frame. But I suppose a welded frame is stronger than a screwed one. But I do alu extrusion assemblies like that quite often these days (tables, racks and stuff).

Strange thing is, I don't find any videos about that on youtube. Usually you'd find anything there...



/edit:
Scrap that. Gotta start with one thing first, worry about the next steps later... ;)
Best regards,
Jonny

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